7
Installation Checks and Initial Functional Tests
Removal from Upper and Lower Cell in Outdoor Non-
Walk In Enclosures or for Indoor Switchgear Installed on
a Raised Pad
- Because the floor level in non-walk in
outdoor enclosures is approximately 6 inches above grade
(foundation) level, the lower circuit breaker in either a one-
high or two-high section of switchgear must be removed
using the preceding procedure for upper circuit breaker
removal.
The approved circuit breaker lifting device or lifting sling
should be used for removal of both lower and upper circuit
breakers from the extension rails of outdoor non-walk in
enclosures.
Physical Inspections
1. Verify that rating of the circuit breaker is compatible
with both the system and the switchgear.
2. Perform a visual shipping damage check. Clean the
circuit breaker of all shipping dust, dirt and foreign
material.
Manual Spring Charging Check
1. Insert the manual spring charging lever into the manual
charge handle socket as shown in Figure 6. Operate the
lever up and down until the spring condition indicator
shows the closing spring is Charged.
2. Repeat the Spring Discharge Check.
3. Verify that the springs are discharged and the circuit
breaker primary contacts are open by indicator
positions.
As-Found and Vacuum Integrity Check Tests
Perform and record the results of both the As-Found insula-
tion test and the vacuum integrity check high-potential test.
Procedures for these tests are described in the Maintenance
Section of this manual.
Automatic Spring Charging Check
Note: A temporary source of control power and test leads
may be required if the control power source has not been
connected to the switchgear. (Refer to the specific wiring
information and rating label for your circuit breaker to deter-
mine the voltage required and where the control voltage
signal should be applied. (Usually, spring charging power is
connected to secondary disconnect fingers SD16 and SD15,
closing control power to SD13 and SD15, and tripping power
to SD1 and SD2.) When control power is connected to the
GMI circuit breaker, the closing springs should automatically
charge.
Figure 8:
Split Plug Jumper Connected to Switchgear.
Figure 9:
Rear of GMI Circuit Breaker with Primary Disconnects.
